android - Sliding Tab is reloading Fragment after changing Tab -


im using these classes tabs:

https://github.com/google/iosched/blob/master/android/src/main/java/com/google/samples/apps/iosched/ui/widget/slidingtablayout.java

https://github.com/google/iosched/blob/master/android/src/main/java/com/google/samples/apps/iosched/ui/widget/slidingtabstrip.java

i have 3 tabs : tab1 tab2 , tab3.

in tab3 im loading contacts phone , add them listview.this takes while till loaded successfuly (200 contacts).

now problem : when change tab tab3 tab1 loading process begins again.so fragment loading 0 again.

so everytime change tab 1 , go tab 3 has loaded again. got idea find solution ? how can prevent fragment reload ?

@override  public view oncreateview(layoutinflater inflater, @nullable viewgroup container, @nullable bundle savedinstancestate) {     view v = inflater.inflate(r.layout.tab_friends, container, false);      lv_contacts = (listview)v.findviewbyid(r.id.lv_contacts);     if(adapter_contacts == null)         new load_contacts().execute();        return v; }

edit: when change tab3 tab2 working fine.it continues when go tab1 starts beginning , builds listview again

all need add this

viewpager.setoffscreenpagelimit(3);

for more detail read doc

http://developer.android.com/reference/android/support/v4/view/viewpager.html#setoffscreenpagelimit(int)


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